Radiator.



F. W. KEEGAN.

RADIATOR.

APPUCATION FILED OCT. 9. 1915.

Patented Sent. 11, 1917.

W/TNE88E\ INVENTOR A TTORNEVS erarae FRANCIS W. KEEGAN, OF NE'W'YORK,.I\T.Y., ASSIGN'OR T0 1). MGRA LIVINGSTON, HF

I NEW YORK; N. Y.

inseam.

all whom it may concern.-

' Be it known that I, FRANCIS \V. KEEGAN, .a citizen of the UnitedStates, and a resident of New York city, borough of Manhattan, in thecounty and State of New York have invented a new and Improved Radiator,of which the following is a full, clear, and exact description.

In cellular radiators employing radiating elements in the form of platesseparate from the conduits and alternating therewith, said elements havebeen given a form in which the plate is bodily zig-zagged to produceradiating elements there being, in radiators of this character, in some,instances fins extending from the water tubes or conduits;

in other instances, the corrugated or zig= zagged radiating element hasbeen slitted across the corrugations to produce indi vidual minorcorrugated elements, the re verse of the main corrugations. These knownradiators leave much to be desired on the score of strength, radiatingeiiiciency, and the assembling of the parts without danger of crushingthe water tubes.

My invention is more particularly designed for use in cellular radiatorsemploying zig-zag water tubes and radiating elements presenting togethera honeycomb pattern though the invention is not limited in all itsphases to this'type.

Prime objects of my invention are to provide a radiating element havinga maximum efiiciency by reason of presenting a mate: rially increasedtotal eflective radiating surface; and to provide a radiating elementthat will effectively support and brace the water tubes or conduits andmaterially increase the strength and {stability of the radiatorstructure.

The distinguishing features of the invention, and the advantages of thestructural features characterizing the practical embodiment thereof,will more clearly appear from the specific description following.

Reference is to be had to the accompanying drawings forming a part ofthe specification in which similar reference characters indicatecorresponding the views.

Figure l is a front elevation of a radiator frame and a portion of thegrid or cellular structure presented by my improved radiating elementsand Water tubes;

Fig. 2 is a fragmentary front View on an parts in all Specification ofLetters Patent. Patented Emm 11 191*? Application filed Dotober 9, 1915.

Serial No. 55 ,002.

enlarged scale showing a section of the radiator, parts being insection;

F ig. 3 is a perspective View of a portion of my improved radiatingelement;

Fig. t is a view similar to Fig. 2 but illustrating a slightly differentform of the invention Fig. is a perspective view of a portion of aradiating element employed in the form shown in Fig. 4e;

Fig. 6 is a detail view showing a frag-- ment of a radiating fin partlyin section and partly in side elevation indicating tinning or solderthereon;

Fig. 7 is a fragmentary sectional view of a portion of the wall of oneof the water conduits showing solder or tinning applied thereto as asubstitute for the arrangement I shown in Fig. 6; and

Fig. 8 is a perspective view of a strip of solder and a blank formingthe same prefer-- ably employed in the form of the invention illustratedin Figs. 4c and 5.

The invention is adapted to be embodied in any suitable radiating frameA to pro due a cellular structure B as indicated in Fig. 1. a

In constructing the practical embodiment of the invention in the formsillustrated in Figs. 2 and 3, zig-zag water tubes 10, are provided, thesame having V-shaped corrugations. Disposed between each pair of atertubes 10, and ranging in the same gen eral direction thereof is aradiating element designated generally by the numeral 11; this elementwhich I produce from a thinnietal plate, I give in general a zig-zagform whereby to produce with the water tubes 10,

a radiator of honeycomb pattern.

The water tubes 10, are plain, that is, they present no lateralprojections in the way of fins or braces. On the other hand theradiating element 11, is given a form to present radiating finsdesignated generally by the numeral 12, these being positionedalternately at opposite sides of the plate 11, at the ,salients thereofso as to be disposed laterally in the direction of the salientspresented by the water tubes 10. The form and arrangement, as well asthe dimensions of the fins, are such that the same will extend to acontact with the opposed Walls of the water tubes 10, whereby to bracethe latter and result in a stable structure. Each fin is formed bybending the material of the tit ' I'QSPQCiLlVC conduits,

iii

.duit tinned as at 18,

.ealients of the conduits so plate 11, laterally at the salient of theplate so that a return bond is produced presenting upper and lowerspaced walls integral at their bases with the 'plate 11, and continuouswith each other. Thus, both surfaces of both walls oi the fin are opento the contact of air passing through the cells produced by the tubesand the said radiating element. In the preferred form of the inventioneach fin is slitted transversely, subdividing the same into fin sections13, and these sections are bent alternately to be disposed in planes atan angle to each other so that the terminal of one fin section willcontact with the adjacent wall of a conduit above the tip of the salientwhile the next fin section will ongage the said wall of the conduitbelow the tip of the salient so that in effect, there is a depressionpresented by the alternate fin sections to receive the salient of theconduit. The end of each fin section 13, is preferably flattened as at14:, to give ample surface contact with the conduits. By the provisionof .the multiplicity of fin sections a greater number of radiating edgeswill bepresented to the air current.

At the front and the radiating plate 11, the frontand back ends of eachfin 12, are flattened so as to produce lateral members 15, disposed atthe median line of the fins back vertical edges of the lateral bends at12. and directly in line with the tips of the salients oi the conduitsand radiating element, two thicknesses of the members 15 l ing closetogether so as to constitute in effect a single lateral brace memberwhich at the same time completes the honeycomb pattern of the cellularstructure. The ends of the members 15, are preferably split to producediverging members 16, 17 which receive the salient of the water tube.

The ends of the fins 12, as well as the member 16, are soldered-to thewalls of the the solder is indicated at 18 in Fig. 2. The solder can beapplied in different ways; in F 6 I have shown a coating of tin 18, onthe flattened end 14, of each fin section 13, so that when the parts areassembled in close relation and'subjected to heat, the solder. will jointhe fins to the tubes. In Fig. 7, instead of applying the tin or solder18, to thcterminals of the radiating fins, I have shown the wall 10 of aconabove and below the tip of the salient. In Fig. 8 is illustrated afragnient of a strip of solder which may be produced. separately in theform of a flat blank and laid between the fins and the that when theseparts are pressed together, the strip of solder will be bent intoV-shape and held in position until subjected to heat. This manner ofsohlering may be. employed in connection with the form of realiatingelementiillustrated in. 1 and The radiating eleradiating fins 12,corresponding in general with the fins 12 in that they extend laterallyfrom the plate forming the element 11", to

the salients of the conduits or water tubes 10, which are the same as inFigs. 1 and 2. In this form of the invention, however, the fins presentunbroken spaced upper and lower walls 13?, that is, the fins extendcontinuously from end to end and are not formed into a plurality of finsections as in the first described construction. At the outer ends thefins 12 are formed with a V- shaped depression 13, to receivethesalients of the conduits 10. The elements 15", 16 and 17, are thesame as i the first described construction. 1

My improved 1' diating element permits of employing plain water tubeswithout fins or other special formation at the salients and it will beobvious that a very strong construction results by reason of the firmsupporting and bracing oi the water tubes by the radiating element andits fins. Moreover, these structural advantages are incident to such adisposition of the radiating members that'the maximum effectiveradiating surface is presented to the cooling air current.

Having thus claim as new, and ters Patent:

described my invention I desire to secure-by Let- 1. A cellularradiator, including zig-zag conduits for a'fluid, and an intermediatezigzag radiating element having lateral &

radiating fins extending therefrom alter nately at opposite sides towardthe conduits,

the fins'heing in contact with surfaces apnately at opposlte sidestowardthe conduits,

'the said fins contacting with surfaces appurtenant to the conduits andpresenting double walls spaced from each other, and being slittedthrough both walls thereof presenting. a plurality of fin sections, saidsections being at an angle to each other.

3. A cellular radiator, including zig-zag conduits for a fluid, and an.intermediate zig-zag radiating element having lateral fins extendingtherefrom alternately at, op-

deflected alternately in planes posite sides toward. the conduits, thefins presenting double walls spaced from each other, the said fins beingslitted through both walls thereof presenting a. plurality of tinsections, said sections being deflected alternately in. planes at anangle to each other, said fin sections contacting with the conduits, thecontact of alternate sections of i said fins being slitted each fin witha conduit being respectively at opposite sides of a conduit salient.

at. A cellular radiator, including zig-zag conduits for a fluid, and anintermediate zigzag radiating element having lateral fins extendingalternately at opposite sides of said element, said element and conduitsforming respectively the opposite walls of 'opezrended cells alternating\vitlrthe conduits and extending transverse to the general direction ofthe conduits, said fins all contacting with the said conduits adjacentto the salients ofthe latter at the ends of the cells and alongsubstantially the whole length thereof between the ends and definingwith the. zig-zag body of the element and the zig-zag conduits, thewalls of hexagonal cells.

A radiator, including zig-Zag-eenduits for the flow of a liquid, and anintervening Zig-zag radiating element having lateral radiating finsalternately at opposite sides at the salients oi said element andextending to a contact with the conduits at the salients of the latter,torming opposite walls of hexagonal cells.

6. A cellular radiator, including zig-zag conduits for a fluid, and anintermediate zig-zag element having lateral tins cxtending therefromalternately at opposite sides toward the conduits, the fins presei'itingdouble 'walls spaced from each other, the through both walls thereofpresenting a plurality of fin sections, said sections being deflectedalternately in planes at an angle to each other, said fin sectionscontacting with the conduits, the contact of alternate sections of eachfin with a conduit being respectively at opposite sides of a conduitsalient, the walls of the fins at the front and back edges of theradiating element extending in close rela tion directly to and in linewith the salients I ofthe conduits and being secured to said conduits.

7. A radiator, including conduits, and an intermediate radiating elementhaving lateral radiating fins extending therefrom alternately atopposite sides toward the conduits, the said fins being slitted throughboth walls thereof presenting a plurality of tin sections, said sectionsbeing deflected alternately in planes at an angle to each other.

8. A radiator, including conduits, and an. intermediate radiatingclement lniving latoral-radiating fins, extending therefrom alternatelyat opposite sides, said fins presenting double walls spaced from eachother and being slitted through both walls thereof presenting aplurality of tin sections, said sections being deflected alternately inplanes at an angle from each other and secured to the conduits.

J. In a radiator, a pair of conduits presenting opposite zig-zag walls,and an intermediate radiating element of Zig-zag form and formed withfins at the salients thereof alternately at opposite sides extendinglaterally to an engagement with the walls of the conduits at thesalients of adjacent conduits to form hexagonal cells, the said finshaving spaced walls forming air passages, and the end of the said wallsof the fins lying in contact to define a unitary wall member.

10. A cellular radiator comprising zig-zag water conduits, thosesalients of the con duits having asiinilar direction being in the sameplane transi ersely to the general direction of the conduits, and azigzag radiating element having its salients alternating in thetransverse planes of the salients of the respective conduits and formedwith integral lateral fins at the salients of said ele- ,n1ent, the saidfins extending directly to the salients of the conduits, said conduitsand radiating elements thus forming hexagonal air cells.

In testin'lony whereof I have signed my name to this specification inthe presence of two subscribing witnesses.

F tAN CIS lV. KEEGAN.

Witnesses J. L. ltIoAomvrn, PHILIP D. ItoLLnaUs.

